Scale-beam.



No. 662,367. rammed Nov. 2o, |900. c. s. sTnusLEn.

SCALE BEAM.

(Application led Mn. 5, 1900.)

(No Ilndsl.)

I QZ

UNITED STATES PATENT EEICE.

CHARLES G. STRUBLER, OE DETROIT, MICHIGAN, ASSIGNOR TO WALTER F. STIMPSON, OF SAME PLACE.

SCALE-BEAM.

SPECIFICATION forming part of Letters Patent No. @62,36% dated November 20, 1900- Application filed March 5, 1900.

T0 all whom it may concern:

Be it known that I, CHARLES G. STRUBLER, a citizen of the United States, residing at Detroit, in the county of Wayne and State of Michigan, have invented certain new and useful Improvements in Scale-Beams,of which the following` is a specification, reference being had therein to the accompanying drawings.

My invention relates to scales, and more particularly to that class known as computing-scales.

The invention consists in the means employed for counterbalancing the beam,where by the latter may be more conveniently disposed in relation to its supporting-frame and whereby the counterweight itself is entirely concealed from view.

'In the construction of counter-scales it is usual to support the fulcrum for the beam upon a horizontal shelf or cap, which is itself supported upon uprights rising from the base-frame of the scale. In computing-scales when the computing member is carried by the beam said computing member is generally arranged above the pivots of the beam, and as it is necessary in order to secure the accurate weighing of the beam that the pivots be above the center line of gravity it becomes necessary to arrange a counterbalancingweight below said pivots. In certain prior constructions this balancing of the beam has been accomplished by forming the lower or supporting member with an offset portion carrying the pivots, which is placed as close as possible to this computing member, while the greater portions of said supporting member is dropped below the line of pivots to act as a connterbalancing-weight. An objection to this construction is that it increases the height of the beam above the shelf and detracts from the appearance of the scale.

It is one object of my present invention to obtain a construction in which an almost straight lower beam or supporting member may be employed and placed buta short distance above the supporting-shelf, said beam being eounterbalanced by a weight depending therefrom and located within the hollow shelf.

It is a further object to completely conceal said counterweight by placing the depending (No model.)

arm which carried the same between the bifurcations of the fulcrum-standard and passing it through an aperture in the base thereof into the hollow space within the shelf.

It is a further object of my invention to secure a sufficient counterweight to completely counterbalance the beam without increasing the size to such an extent that there is danger of its striking against the sides of the shelf and thereby interfering with the free movement of the beam.

These objects are attained by the construction more fully hereinafter described and claimed.

In the drawings, Figure l is a front elevation of a scale to which my improvement is applied. Fig. 2 is a longitudinal section through the hollow shelf and fulcrum-bracket, showing the beam and its counterweight in elevation. Figa?, is a cross section on linea; sc.

A is a scale of any suitable construction, comprising the usual shelf B, supported upon standards @,extending upward from the base I). The shelf B has a [iat top a and the depending side iianges b, leaving between the hollow space or chamber c.

` E is a fulcrum-standard secured to the top of the shelf B and bifurcated to embrace the beam. The beam E, I have shown as comprising a computing member G, carrying the poise II and the supporting-frame I. This frame comprises the substantially horizontal bar d, a portion of which, d', forms the tarebeam, the upright portions e and f at opposite ends of the bar (l, and the curved arm g, to which the counterpoise is attached. The bar d is provided with the fulcrum-pivots h, adapted to rest upon bearings in the standard E, and is also provided with the pivots t', to which the rod j', extending to the platform levers, is connected. The portion d2 of the bar d between the pivots 7L and is preferably slightly offset for the purpose of giving a slight spring` or elasticity to the beam. The beam as constructed as thus far described will have its center of gravity considerably above the line of the pivots. To bring the center of gravity down into line with the pivots, I provide a counterweight of the following construction:

J is an arm secured to the bar d below) the IOO i7 cease? with the bar d. The base of the fulcrumstandard E is centrally apertured at p, this aperture being of sufficient size to permit the arm J passing therethrough and also to allow sufficient clearance of the movement of said arm caused by the movement of the beam.

, K is a rod secured to the lower end of the arm J and extending horizontally upon opposite sides of said arm longitudinally of the beam'. This rod supports the adjustable counterweights L and L and preferably has a threaded engagement therewith.

The parts being constructed as shown and described, when assembled the arm J will be concealed from view by the opposite sides of the bifurcated fulcrum-standard E, while the rod K and counterweights L and L are concealed by the side {ianges Z) of the shelf. At the same time the arm J may be readily adjusted vertically by loosening the screw Z and the counterweights L and L may be easily adjusted, as the shelf is open from beneath. Thus the beam may be counterbalanced, first, to bring the center of gravity in line with the pivots, and, second, to balance the beam and its actuating connection. As the arm J depends from the bar d in line with the fulcrum-pivots h and as the counterbalanceweights L and L' are arranged on opposite sides of said arm, the swinging or lateral deflection of the beam will cause but slight. lateral movement of said weights, thus there will be no danger of the weights striking the side lianges b of the shelf. Furthermore, as

two weights are used instead of one they may be proportionately smaller, which will give greater clearance within the hollow shelf.

What I claim as my invention isl. In a scale, the combination with a hollow shelf of a bifurcated fulcrum-standard mounted upon said shelf, a beam fulcrumed in said standard, an arm depending from said beam arranged between and concealed by the bifurcations of said standard and passing into said hollow shelf, an arm extending laterally from said depending arm, within said hollow shelf, andan adjustable counter-weight upon said laterallyextending arm.

2. ln a scale, the combination with a hollow shelf, of a fulcrum-standard mounted upon said hollow shelf` having a centrallyapertured base and bifurcated upper portion, a beam fulcrumed in said standard, an arm depending from said beam arranged between and concealed by the bifurcations of said standard and extending through said apertnred base into said hollow shelf, an arm extending laterally froin said depending arm within said hollow shelf, and an adjustable counterweight upon said arm.

3. In a scale, the combination with a hollow shelf of a bifurcated fulcruxii-standard mounted upon said hollow shelf, a bealn fulcrumed in said bifurcated standard, an arm depending from said beam arranged between and concealed by the bifurcations of said standard and extending into the hollow space within said shelf, arms extending oppositely from said depending arm and longitudinally7 within said hollowshelf, and adjustable coun terweights upon said laterally projecting arms.

4. In a scale, l[he combination with a hollow shelf member, a bifnrcated fnlcrumstandard thereon and a beam fulcrumed in said standard, of an arm depending from said beam arranged between and concealed by the bifurcations of said standard, and extending into said hollow shelf, andan adjustable counterweiglit carried by said arm within said hollow shelf.

In testimony whereof I affix my signature in presence of two witnesses.

CHARLES G. STR UBLER.

llitnesses:

M. B. ODOGHERTY, H. C. SMITH. 

